I'd recommend 'My Lesbian Experience with Loneliness' by Kabi Nagata. It's a very personal and honest account of her life as a lesbian, dealing with mental health issues and self - discovery. As for gay - themed graphic novels, 'Watchmen' by Alan Moore has a gay character, Rorschach, whose backstory and relationships are explored in a complex way. It's not the main focus of the story but adds another layer of depth to the overall narrative.
In the comics, Frenchie's sexuality wasn't explicitly stated as gay. It might be open to interpretation depending on how you read the character's storylines and interactions.
In the mainstream comics, Venom's sexuality is not defined as gay. His character development is centered around battles and conflicts rather than his sexual orientation.
It depends on the specific comic and its storyline. Sometimes it might be explicitly shown or hinted at, while in others there might be no clear indication.